FUNDAMENTAL STUDY ON FLASH BACK TO INTAKE SYSTEM OF TURBOCHARGED GAS ENGINE

摘要

The dangerous flash back flame passing through the compressor channel with high speed is expected when the compressor of turbo-charged gas engine installs after the gas injector. In this paper we observe the flash-back flame in the model intake system. This model system has the specially designed device which generates the simulated flash-back in the real engines. We find that the flash-back flame cannot propagate through the rotating channel of the compressor if the flame speed is low. However, the flash-back flame always pass through the compressor when the flame speed is enough high to generate the detonation wave. An intake system of the turbo-charged gas engine to avoid dangerous flash back flame is proposed.